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Síntese de 3-organocalcogenil-2-organo-cromenonas via reações de ciclização intramolecular mediada por selectfluor®
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2021-09-30)
This paper reports the development of an effective synthetic protocol between 1,3-
organo-propynones 1 and different diorganoyl dicalcogenides 2 mediated by Selectfluor® and
employing acetonitrile as a solvent, at room ...
Síntese de 1-(selenobutil)-2-fenil-4H-selenofeno[2,3-c]cromenos via reação de ciclização mediada por sais de ferro
(Universidade Federal de Santa MariaBrasilUFSMCentro de Ciências Naturais e Exatas, 2017-12-04)
This paper reports the study developed for the preparation of 1-(butylselanyl)-2-phenyl-4H-selenopheno[2,3-c]chromenes substituted by cyclization in intramolecular cascade of arylpropargyl ethers. Firstly, the study was ...
The intramolecular Heck reaction and the synthesis of indolizidinone, quinolizidinone and benzoazepinone derivatives
(Georg Thieme Verlag KgStuttgartAlemanha, 2002)
Experimental and computational study of 6-exo and 7-endo cyclization of Aryl radicals followed by Tandem SRN1 substitution
(American Chemical Society, 2013-04)
The reaction of N-allyl-N-(2-halobenzyl)-acetamides and derivatives was investigated in liquid ammonia under irradiation with the nucleophiles Me3Sn−, Ph2P− and O2NCH2 −. Following this procedure, novel substituted 2- ...
Intramolecular azide-alkene cycloaddition-elimination reaction in an aldohex-2-enonic acid derivative
(Elsevier, 2019-09)
A 6-azido-2-tosylenolate, obtained from D-glucono-1,5-lactone in six steps, underwent an intramolecular cycloaddition–elimination pathway under mild conditions, yielding a chiral, substituted 5,6-dihydro-4H-pyrrolo ...
The first intramolecular Heck-Matsuda reaction and its application in the syntheses of benzofurans and indoles
(Pergamon-elsevier Science LtdOxfordInglaterra, 2010)
Formação sequencial de ligações carbono-carbono/carbono-selênio mediada por cloreto férrico e dicalcogenetos de diorganoíla: síntese e reatividade de 2-organocalcogenil-naftalenos
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2017-07-31)
In the present study, a series of aryl alkynols functionalized was subjected to intramolecular cyclization reaction promoted by iron(III) chloride and diorganyl dichalcogenides allowing the synthesis of 2-organoselenyl-n ...
Síntese de derivados de benzo[b]furanos via dupla ciclização intramolecular promovida por t-BuOK
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2016-09-23)
In this work, we reported the developed study for the preparation of substituted benzo[b]furans
via double anionic intramolecular cyclization process promoted by t-BuOK. Firstly, a variety
of 5H-benzo[d]benzofuro[3, ...
Copper (II) as catalyst for intramolecular cyclization and oxidation of (1,4-phenylene)bisguanidines to benzodiimidazole-diylidenes
(2020)
A synthetically useful approach of catalytic intramolecular cyclization and oxidation of 20,20-(1,4-pheny lene)bis(1,3-dialkyl)guanidines (Alkyl = isopropyl 1 or cyclohexyl 2) catalyzed by copper acetate in acetonitrile ...